CN1436832A - Photochromic diaryl ethylene compound and its prepn and use - Google Patents
Photochromic diaryl ethylene compound and its prepn and use Download PDFInfo
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Abstract
THe photochromic diaryl ethylene compound is prepared through the steps of: brominating 2-methyl thiofuran; reaction with tributyl borate to produce 2-methyl-3-bromo-5-thiofuran borate; coupling reaction to connect benzyl group and thiofuran ring; and reaction with perfluorocyclopentene to produce target molecule. The compound may be used widely in superdensity erasable light information storing material and light controlled switch material.
Description
Technical field
The present invention relates to a class organic photochromic material and manufacture method and application, particularly relate to a class organic photochromic vinyl compound and manufacture method and application.
Background technology
Along with information technology, the particularly develop rapidly of computer technology and industry thereof, storage has proposed more and more higher requirement to information digitalization: should satisfy high storage density, high data rate, high storage life and high erasable number of times, have the equipment of simple economy and the advantage of low price information digit again.Optical storage technology since have storage life long, can contactless read/write/wiping, advantage such as the price of the carrier-to-noise ratio height of information, information digit is low, will replace the part magnetic information recording and occupy certain status.
Concerning the Optical Disc Data Storage with Ultrahigh Density technology, storage medium is its center integral part, but its development becomes the bottleneck in this field very slowly and, and the optical disk medium of therefore exploring new super-high density remains the key of optical storage technology development.Present inorganic optical memory material is used widely as magneto-optic and phase change material, and organic erasable optical storage media also is in the primary stage of research and development.In the heat pattern record of magneto-optic or phase change medium, because the irregular fever character of medium, and make the minimum hot spot that is recorded be irregularly shaped, thus cause this class recording medium to have a resolution limit.Advantage such as organic optical memory material has the storage density height, heat conductance is little, signal to noise ratio is big, fusing point and softening temperature adjustability low, that higher recording sensitivity, molecular structure are arranged are big, be expected to realize molecular memory, therefore developing the super-high density optical storage organic medium that is suitable for photon mode is trend of the times, and has broad application prospects.
Photochromism is meant that a kind of chemical substance has the reversible conversion between the state of marked difference at two kinds of absorption spectrums, the conversion that wherein has a direction at least is caused by electromagnetic radiation, and the molecule with this feature is called photochromic molecules or photoisomerization molecule.In the photoisomerization process, this quasi-molecule not only absorption spectrum changes, and its specific refractory power, specific inductivity, oxidation/reduction potential and geometric configuration etc. all may change.The change of these character can be useful for the various opto-electronic devices of preparation, as erasable optical information stored CD of high-density and photoswitch.At present, the organic dye that is used as optical information storage medium has azo, Hua Jing, phthalocyanine, fulgide and spiro-pyrans etc., but these molecules all can not satisfy the needs of high density compact disc of future generation owing to its inherent character defective.In recent years, design synthetic by people such as M.Irie, a class two fragrant alkene photochromic molecules have been developed, this type of photochromic compound has advantages such as good chemistry and thermostability, significant fatigue resistance, high cyclisation quantum yield and sensitivity, makes it have good application prospects in erasable optical memory material and photoswitch material and becomes the focus of research.
Summary of the invention
The purpose of this invention is to provide a kind of novel diaryl ethylene photochromic compound.
Diaryl ethylene photochromic compound of the present invention is the compound of following general formula (I):
R wherein
1Be H atom or methyl, R is the C atomicity less than 16 Heterocyclylalkyl or benzyl.
As described R when being the C atomicity less than 16 Heterocyclylalkyl, one of following group preferably:
When described R is benzyl,
The preferred NO of R '
2, N (CH
3) or OCH
3
Second purpose of the present invention provides the method for the described compound of a kind of production claim 1.
For realizing this purpose, the technical solution used in the present invention consists essentially of following steps:
1) with 2-thiotolene bromination;
2) with the tributyl borate reaction, generate 2-methyl-3-bromo-5-boronate thiophene;
3) by linked reaction benzyl is connected with thiphene ring;
4) generate target molecule with the Perfluorocyclopentene reaction.
In aforesaid method, 2-thiotolene bromination is carried out under condition of ice bath; With the tributyl borate reaction, generate the process of 2-methyl-3-bromo-5-boronate thiophene and generate the process of target molecule by n-Butyl Lithium catalysis with the Perfluorocyclopentene reaction; By linked reaction the process that benzyl and thiphene ring couple together is made catalyzer by four triphen phosphorus palladiums.
Compound of the present invention itself or mix up other macromolecular material and make diaphragm and can be used as super-high density, erasable organic photon type information storage material is used to prepare the photoswitch element or is used to prepare photochromic luminescent device etc.
Novel diaryl ethylene photochromic compound of the present invention all can keep the good photochromic performance in solution or film, and the equal good high-performances such as chemistry and thermostability, significant fatigue resistance, higher cyclisation quantum yield and good sensitivity of tool of open loop attitude (colourless attitude) and closed loop attitude (colour generation attitude).
Novel diaryl ethylene photochromic compound of the present invention has specified absorbing wavelength, as depicted in figs. 1 and 2, the absorption spectrum of colour generation attitude is positioned at 400～600nm, be that the laser apparatus of 532nm is complementary just in time, can be used for the development of shorter wavelength organic photochromic photon type recording medium with wavelength.Writing fashionablely, is λ with wavelength at first
1Light (wiping light) irradiation, storage media is converted to state 2 by state 1, be λ with wavelength then
2Light (writing light inlet) do writing of binary coded message, make irradiated part change state 1 into, thereby write down binary-coded 1 by original state 2; Not irradiated part is maintaining condition 2 still, can be corresponding to binary zero.Reading of information can be with reading transmission change or change of refractive read output signal.The method of reading transmissivity is to be λ with wavelength
2Rayed, measure its transmission change and read out information.Work as λ
2Illumination be mapped to state 1 place (being encoded to 1) because 1 couple of λ of state
2Light does not absorb or seldom absorbs, and transmissivity is big; If shine state 2 places (being encoded to 0), because 2 couples of λ of state
2Absorb very greatly, so transmissivity is little.According to the variation of transmissivity, can record the information that has write down.
Description of drawings
Fig. 1 is the abosrption spectrogram of The compounds of this invention before and after hexane solution medium ultraviolet rayed of embodiment 1
Fig. 2 is the abosrption spectrogram of The compounds of this invention before and after hexane solution medium ultraviolet rayed of embodiment 2
Fig. 3 is the abosrption spectrogram of The compounds of this invention before and after PMMA film medium ultraviolet rayed of embodiment 1
Fig. 4 writes voltage of signals and time chart for the The compounds of this invention diaphragm of embodiment 1 with the 532nm laser apparatus
Fig. 5 writes the reflectivity and the time chart of signal with the 532nm laser apparatus for the The compounds of this invention diaphragm of embodiment 1
Fig. 6 is reflectivity and the time chart of the The compounds of this invention diaphragm of embodiment 1 with 532nm laser apparatus read output signal
Embodiment
Embodiment 1,1,2-two (2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentene (1a) and synthetic and application thereof
In general formula (I), work as R
1Be hydrogen atom, R is 1, during 3-dioxolanes base, promptly constitutes photochromic compound 1,2-pair (2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentene, structural formula is as follows:
The synthetic schemes of this novel diaryl perfluoro cycolpenfene photochrmism compounds is shown below:
Concrete steps are as follows:
1, preparation 4-bromo-5-thiotolene formaldehyde (3)
At ambient temperature, 4.9g 5-methyl-2 thiophene carboxaldehyde (2) is dissolved in the acetate, after whipped state drips the acetate 25ml that contains 0.05mol liquid bromine down, continues room temperature reaction 8hr., adds moisture liquid, water Na
2CO
3After the neutralization, use extracted with diethyl ether again, merge organic phase, use saturated Na
2CO
3Wash anhydrous MgSO successively with the aqueous solution
4Drying filters, revolve to boil off solvent, vacuum-drying, Zhu Se Spectrum separate light yellow crystal 4-bromo-5-thiotolene formaldehyde (3).
Productive rate: 93.56%.
Structure is identified:
1HNMR (200MHz, CDCl
3) δ 2.47 (s, 3H), δ 7.57 (s, 1H), δ 9.75 (s, 1H).
2, preparation 4-bromo-5-methyl-2-(1, the 3-dioxolane) basic thiophene (4)
Take by weighing an amount of 4-bromo-5-thiotolene formaldehyde and be dissolved in the benzole soln, add excessive ethylene glycol and p-methyl benzenesulfonic acid, stirring, backflow 12hr..After being chilled to room temperature, pour reaction mixture into an amount of saturated NaHCO
3In the aqueous solution, extracted with diethyl ether, and use NaHCO successively
3The aqueous solution and water washing, anhydrous MgSO
4Drying, suction filtration revolves to steam and desolventizes, vacuum-drying, Zhu Se Spectrum separate pale yellow oily liquid body 4-bromo-5-methyl-2-(1, the 3-dioxolane) basic thiophene (4).
Productive rate: 57.15%.
Structure is identified:
1HNMR (200MHz, CDCl
3) δ 2.45 (s, 3H), δ 4.09 (t, 4H), δ 6.03 (s, 1H), δ 7.29 (s, 1H)
3, preparation 1, two (2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentenes (1a) of 2-
Reach under-78 ℃ of conditions at nitrogen, 2.5g 4-bromo-5-methyl-2-(1, the 3-dioxolane) basic thiophene (4) is dissolved in the tetrahydrofuran (THF) (THF), the hexane solution of stirring adding 5.3mln-BuLi (1.6M) and maintenance-78 ℃ low temperature stirred solution 1 hour; 0.84g perfluoro cyclopentenes is joined in the reaction flask, continue reaction mixture after stirring 5hr. under-78 ℃ of low temperature, to rise to room temperature naturally, add the suitable quantity of water termination reaction.Separatory is also used extracted with diethyl ether.Merge organic phase, distillation is desolvated, vacuum-drying.Resistates obtains tawny oily 1 with normal hexane post/chloroform silica gel column chromatography separation, two (2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentene (1a) liquid of 2-.
Productive rate: 45.26%.
Structure is identified:
1HNMR (200MHz, CDCl
3) δ 2.47 (s, 6H), δ 4.13 (t, 8H), δ 6.09 (s, 2H), δ 7.33 (s, 2H).
1,2-pair (structure of 2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentene (1a) open loop attitude (colourless attitude) and closed loop attitude (colour generation attitude) is as follows:
The absorption spectrum of its colour generation attitude is positioned at 400～600nm, from the result of Fig. 6-9 as can be seen, 1,2-is two, and (2-methyl-5-(2-(1, the 3-dioxolanyl)-thiene-3-yl-) Perfluorocyclopentene can be used for the recording medium of the multistage record of single or multiple lift.
In general formula (I), work as R
1Be hydrogen atom, when R is the p-nitrophenyl methyl, promptly constitute photochromic compound 1, two (2-methyl-5-p-nitrophenyl ylmethyl-thiene-3-yl-) Perfluorocyclopentenes (2a) of 2-, structural formula is as follows:
1, the synthetic schemes of two (2-methyl-5-p-nitrophenyl ylmethyl-thiene-3-yl-) Perfluorocyclopentenes of 2-is shown below:
Concrete synthesis step is as described below:
1, preparation 3,5-two bromo-2-thiotolenes (6)
Under condition of ice bath, 8g 2-thiotolene (5) is dissolved in the acetate, drip the liquid bromine 9.6ml that contains acetate, behind the continuation ice bath reaction 16hr., add moisture liquid, water Na
2CO
3After the neutralization, use extracted with diethyl ether again, merge organic phase, use saturated Na
2CO
3Solution washing, CaCl
2Dried overnight, suction filtration revolves and boils off solvent, and underpressure distillation obtains weak yellow liquid preparation 3,5-two bromo-2-thiotolenes.
Productive rate: 80.84%.
Structure is identified: IR (cm
-1) 780.4,810.1,949.8,1010.5,1138.8,1301.7,1450.9,1535.8,2785.8,3080.9.
2, preparation 2-methyl-3-bromo-5-boronate thiophene (7)
Reach under-78 ℃ of conditions at nitrogen, with 6g 3,5-two bromo-2-thiotolenes are dissolved in the anhydrous diethyl ether, stir, slowly inject n-BuLi, low-temp reaction adds the 7ml tributyl borate after half an hour, behind the continuation reaction 1.5hr. that heats up naturally, add rare HCl stopped reaction, separatory is abandoned water, with rare NaOH extracted organic phase, till water is acidified to neutrality and no longer produces white precipitate with rare HCl solution.Suction filtration, rare HCl washing precipitation, vacuum-drying obtain light yellow solid 2-methyl-3-bromo-5-boronate thiophene.
Productive rate: 61.58%.
Structure is identified: IR (cm
-1) 690.0,789.9,832.3,1009.9,1132.4,1340.3,1473.5,1528.3,1290.8,3201.5.
3, preparation right-nitro benzyl bromide (8)
Put 200 gram para-nitrotoluene in 1 liter of three-necked bottle, the through bottle of the dropping funnel pipe end end,, reflux condensing tube terminates to air pocket.In oil bath, calorify 145～150 ℃.Stir, drip 368 gram bromines at 2hr..After dripping off, heated and stirred continues 10 minutes.Suction strainer is as cold as 20 ℃.Leach crystal, compress and blot.Wash twice with sherwood oil, get crude product 280～315 grams, 94～97 ℃ of fusing points.Can be again from 3～3.5 liters of sherwood oil recrystallizations, with 10～15 gram activated carbon decolorizings, light yellow crystal right-nitro benzyl bromide, weigh 250～280 grams, 97.5～99 ℃ of fusing points.(Coleman，G.H.，Honeywell，G.F.，Org.Syn.，Coll.Vol.2，443(1943).)
4, preparation 2-(p-nitrophenyl methyl)-4-bromo-5-thiotolene (9)
At N
2Protection down, with 5.4g right-nitro benzyl bromide and Pd (PPh
3)
4Be dissolved among the THF, stir adding 5.5g2-methyl-3-bromo-5-boronate thiophene and Na
2CO
3Solution, stopped reaction behind the reflux 16hr. is chilled to room temperature, separatory, the water extracted with diethyl ether merges organic phase, revolves to boil off solvent, vacuum-drying.Resistates obtains compound 2-(p-nitrophenyl methyl)-4-bromo-5-thiotolene with normal hexane post/chloroform for the purification of elutriant chromatogram in silicagel column.
5, preparation 1, two (2-methyl-5-(the p-nitrophenyl methyl)-thiene-3-yl-) Perfluorocyclopentenes (2a) of 2-
Under nitrogen and-78 ℃ of conditions, 3.1g 2-(p-nitrophenyl methyl)-4-bromo-5-thiotolene is dissolved among the THF, stir the hexane solution that adds 6.25mLn-BuLi (1.6M) and keep low temperature stirred solution half an hour; 1.06g perfluoro cyclopentenes is joined in the reaction flask, and continuation rises to room temperature after reaction mixture is stirred 2hr. at low temperatures naturally, adds the suitable quantity of water termination reaction.Separatory is also used extracted with diethyl ether.Merge organic phase, distillation is desolvated, vacuum-drying.Resistates obtains photochromic compound 1 with normal hexane post/chloroform silica gel column chromatography separation, two (2-methyl-5-(the p-nitrophenyl methyl)-thiene-3-yl-) Perfluorocyclopentenes (2a) of 2-.
1, the structure of two (2-methyl-5-(p-nitrophenyl methyl)-thiene-3-yl-) Perfluorocyclopentene (2a) open loop attitudes (colourless attitude) of 2-and closed loop attitude (colour generation attitude) is as follows:
Embodiment 3,1, two (2-methyl-5-benzyl-thiene-3-yl-) Perfluorocyclopentene and the preparations thereof of 2-
In general formula (I), work as R
1Be hydrogen atom, when R is benzyl, promptly constitute photochromic compound 1, two (2-methyl-5-benzyl-thiene-3-yl-) Perfluorocyclopentenes (3a) of 2-, structural formula is as follows:
Concrete synthesis step is as follows:
3, preparation 2-(benzyl)-4-bromo-5-thiotolene
At N
2Under the protection, with 7.8g cylite and 0.2g Pd (PPh
3)
4Be dissolved among the THF, stir adding 11g 2-methyl-3-bromo-5-boronate thiophene and Na
2CO
3Solution, stopped reaction behind the reflux 16hr. is chilled to room temperature, separatory, the water extracted with diethyl ether merges organic phase, revolves to boil off solvent, vacuum-drying.Resistates obtains compound 2-(benzyl)-4-bromo-5-thiotolene with normal hexane post/chloroform for the purification of elutriant chromatogram in silicagel column.
4, preparation 1, two (2-methyl-5-benzyl-thiene-3-yl-) Perfluorocyclopentenes (3a) of 2-reach under-78 ℃ of conditions at nitrogen, 6.1g 2-(benzyl)-4-bromo-5-thiotolene is dissolved among the THF, stir adds the hexane solution of 15.6ml n-BuLi (1.6M) and keep low temperature stirred solution half an hour; 2.5g perfluoro cyclopentenes is joined in the reaction flask, and continuation rises to room temperature after reaction mixture is stirred 2hr. at low temperatures naturally, adds the suitable quantity of water termination reaction.Separatory is also used extracted with diethyl ether.Merge organic phase, distillation is desolvated, vacuum-drying.Resistates obtains photochromic compound 3a with normal hexane post/chloroform silica gel column chromatography separation.
Embodiment 4,1, two (2,4-dimethyl-5-benzyl thiene-3-yl-) Perfluorocyclopentenes (4a) of 2-and preparation thereof
In general formula (I), work as R
1Be methyl, when R is benzyl, promptly constitute photochromic compound 1, two (2, the 4-dimethyl-5 benzyls-thiene-3-yl-) Perfluorocyclopentenes (4a) of 2-, structural formula is as follows:
Concrete synthesis step is as follows:
1, preparation 2,4-two bromo-3,5-thioxene
Under condition of ice bath, with 11.2g 2, the 4-thioxene is dissolved in the acetate, drips the acetic acid solution 30ml that contains liquid bromine 11ml, behind the continuation ice bath reaction 10hr., adds moisture liquid, water Na
2CO
3After the neutralization, use extracted with diethyl ether again, merge organic phase, use saturated Na
2CO
3Solution washing, CaCl
2Dried overnight, suction filtration revolves and boils off solvent, and underpressure distillation obtains weak yellow liquid preparation 2,4-two bromo-3,5-thioxene.
Productive rate: 70%.
Structure is identified: IR (cm
-1) 770.4,802.0,930.6,1010.5,1138.8,1300.6,1400.8,1520.6,2815.7,2910.6,3080.9.
2, preparation 2,4-dimethyl-3-bromo-5-boronate thiophene
Reach under-78 ℃ of conditions at nitrogen, with 6.7g 2,4-two bromo-3, the 5-thioxene is dissolved in the anhydrous diethyl ether, stir, slowly inject 25ml n-BuLi (1.6M), low-temp reaction is after half an hour, add the 0.25mol tributyl borate, naturally heat up behind the continuation reaction 1.5hr., add rare HCl stopped reaction, separatory is abandoned water, with rare NaOH extracted organic phase, till water is acidified to neutrality and no longer produces white precipitate with rare HCl solution.Suction filtration, rare HCl washing precipitation, vacuum-drying obtains light yellow solid 2,4-dimethyl-3-bromo-5-boronate thiophene.
Productive rate: 60%.
Structure is identified: IR (cm
-1) 690.0,789.9,832.3,1009.9,1132.4,1340.3,1473.5,1528.3,2815.8,2910.8,3201.5.
3, preparation 2-benzyl-4-bromo-3, the 5-thioxene
At N
2Under the protection, with 7.8g cylite and 0.2g Pd (PPh
3)
4Be dissolved among the THF, stir adding 13.4g2,4-dimethyl-3-bromo-5-boronate thiophene and saturated Na
2CO
3Solution 20ml, stopped reaction behind the reflux 16hr. is chilled to room temperature, separatory, the water extracted with diethyl ether merges organic phase, revolves to boil off solvent, vacuum-drying.Resistates obtains compound 2-benzyl-4-bromo-3,5-thioxene with normal hexane post/chloroform for the purification of elutriant chromatogram in silicagel column.
5, preparation 1, two (2, the 4-dimethyl-5-benzyl thiene-3-yl-) Perfluorocyclopentenes (4a) of 2-
Under nitrogen and-78 ℃ of conditions, 6.65g 2-(p-nitrophenyl methyl)-4-bromo-5-thiotolene is dissolved among the THF, stir the hexane solution that adds 15.6mLn-BuLi (1.6M) and keep low temperature stirred solution half an hour; 2.5g perfluoro cyclopentenes is joined in the reaction flask, and continuation rises to room temperature after reaction mixture is stirred 2hr. at low temperatures naturally, adds the suitable quantity of water termination reaction.Separatory is also used extracted with diethyl ether.Merge organic phase, distillation is desolvated, vacuum-drying.Resistates obtains photochromic compound 1 with normal hexane post/chloroform silica gel column chromatography separation, two (2, the 4-dimethyl-5-benzyl thiene-3-yl-) Perfluorocyclopentenes (4a) of 2-.
Claims (10)
1, the compound of following general formula (I):
R wherein
1Be H atom or methyl, R is the C atomicity less than 16 Heterocyclylalkyl or benzyl.
2, compound according to claim 1 is characterized in that: described R is the C atomicity less than 16 Heterocyclylalkyl.
3, compound according to claim 2 is characterized in that described R is one of following group:
4, compound according to claim 1 is characterized in that: described R is a benzyl,
Wherein, R '=NO
2, N (CH
3) or OCH
3
5, the method for the described compound of a kind of production claim 1 consists essentially of following steps:
1) with 2-thiotolene bromination;
2) with the tributyl borate reaction, generate 2-methyl-3-bromo-5-boronate thiophene;
3) by linked reaction benzyl is connected with thiphene ring;
4) generate target molecule with the Perfluorocyclopentene reaction.
6, method according to claim 5 is characterized in that: 2-thiotolene bromination is carried out under condition of ice bath.
7, method according to claim 5 is characterized in that: described and tributyl borate reaction generates the process of 2-methyl-3-bromo-5-boronate thiophene and generates the process of target molecule by n-Butyl Lithium catalysis with the Perfluorocyclopentene reaction.
8, method according to claim 5 is characterized in that: describedly by linked reaction the process that benzyl and thiphene ring couple together is made catalyzer by four triphen phosphorus palladiums.
9, the compound of claim 1 is as the application of super-high density, erasable and rewritable optical storage material.
10, the compound of claim 1 is as the application of photoswitch material.
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| CN101239976B (en) * | 2007-12-19 | 2010-06-09 | 华东理工大学 | Dithienylethene compounds containing naphthalimide unit |
| CN101402852B (en) * | 2008-11-12 | 2012-03-14 | 江西科技师范学院 | Carbazolyl-containing unsymmetrical photochromicsm di-fragrant alkene monomer or polymer and electrochemical polymerization preparation method thereof |
| CN103890133A (en) * | 2011-09-30 | 2014-06-25 | 思维奇材料公司 | Switching materials, and compositions and methods for making same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239976B (en) * | 2007-12-19 | 2010-06-09 | 华东理工大学 | Dithienylethene compounds containing naphthalimide unit |
| CN101402852B (en) * | 2008-11-12 | 2012-03-14 | 江西科技师范学院 | Carbazolyl-containing unsymmetrical photochromicsm di-fragrant alkene monomer or polymer and electrochemical polymerization preparation method thereof |
| CN103890133A (en) * | 2011-09-30 | 2014-06-25 | 思维奇材料公司 | Switching materials, and compositions and methods for making same |
| US11124524B2 (en) | 2011-09-30 | 2021-09-21 | Solutia Canada Inc. | Diarylethene compounds and uses thereof |
| CN105254622A (en) * | 2015-08-14 | 2016-01-20 | 江西科技师范大学 | Antipyrine monomer-containing photochromic perfluorocyclopentene compound with aluminum ion identification function and its preparation method and application |
| CN105254622B (en) * | 2015-08-14 | 2018-02-27 | 江西科技师范大学 | There is photochromic perfluoro-cyclopentene compound of aluminium ion identification function and its preparation method and application containing antipyrine monomer |
| CN105182570A (en) * | 2015-10-28 | 2015-12-23 | 岭南师范学院 | Diarylethene doped film bistable all-optical switch and application thereof |
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